In organic chemistry
, a pyrrole
is a five membered aromatic ring
, 4 elements of which are carbon atoms
, one element of which is a nitrogen
atom. The molecular formula for a pyrrole is C4
. The structure is:
Pyrroles are components of larger aromatic rings, including the porphyrins of heme, the chlorins and bacteriochlorins of chlorophyll, and the corrin ring of vitamin B12.